/*
 * Copyright 2012 - 2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.frank.search.solr.core.query;

/**
 * Update one or more fields of a Document without touching the others.
 * 
 * @author Christoph Strobl
 */
public interface Update {

	/**
	 * get id field of document to update
	 * 
	 * @return
	 */
	ValueHoldingField getIdField();

	/**
	 * List of fields and values to update
	 * 
	 * @return
	 */
	Iterable<UpdateField> getUpdates();

	/**
	 * Document Version {@code _version_}
	 * 
	 * @return
	 */
	Object getVersion();

}
